csv2qr

Background

My friend told me that they needed to generate some QR codes. Naturally I wrote them a command line tool in Rust.

Prerequisites

Install cargo with rustup. Then just install csv2qr with cargo install csv2qr. rustup should have setup your PATH correctly but on Windows you might have to reboot or something. IDK, I don't use Windows.

Usage

Usage is meant to be pretty self explanatory and csv2qr includes command line help. The only argument that you need to specify is a CSV file where the first column is a "title" and the second column is the value to encode into the QR. There is an example file here.

$ csv2qr -h
csv2qr 0.2.0

A simple command line tool for generating QR codes from a CSV file.

USAGE:
    csv2qr [OPTIONS] <CSV_PATH> [OUTPUT_PATH]

ARGS:
    <CSV_PATH>       CSV file to parse
    <OUTPUT_PATH>    Output directory [default: .]

OPTIONS:
    -d, --debug                Turn on debug output
        --ecc <ECC>            ECC level (low, medium, quartile, or high) [default: medium]
    -h, --help                 Print help information
    -n, --no-pdf               Do not generate the final PDF document, only the intermediate PNG.
                               This will enable save-intermediate automatically
    -s, --save-intermediate    Do not delete the intermediate PNG of the QR code
    -V, --version              Print version information

csv2qr will created a PDF with the titled/labeled QR code for each row in the CSV. Eg,

$ mkdir /tmp/csv2qr
$ csv2qr example/example.csv /tmp/csv2qr
$ ls -l /tmp/csv2qr
total 7856
-rw-rw-r-- 1 myuser myuser 2008838 Oct 20 17:35 Hack_the_planet.pdf
-rw-rw-r-- 1 myuser myuser 2009061 Oct 20 17:35 I_am_not_a_martyr_I%27m_a_problem.pdf
-rw-rw-r-- 1 myuser myuser 2008905 Oct 20 17:35 Prodigy_-_Mind_Fields.pdf
-rw-rw-r-- 1 myuser myuser 2008892 Oct 20 17:35 This_is_what_I_do.pdf

Special thanks

This is just some simple glue code that stitched other Rust crates together. The real magic happens in the genpdf and qrcode-generator crates. Tests were made possible by the bardecoder and image crates. I also included the Calling Code font from the source code of the text-to-png crate.

To the best of my knowledge it's all pure Rust. I have tested with Rust 1.66.1 on Kubuntu 22.04 and Rust 1.73.0 on Windows 10. It will probably run on other platforms too.